<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
    <style>
        body{
            height: 100vh;
            width: 100vw;
            background-color: slategray;
        }

        main {
            background: #9b59b6;
            height: 100px;
            /* padding: 20px; */
            box-sizing: border-box;
        }

        span {
            background: #e67e22;
            display: inline-block;
            /* width: -webkit-fill-available; */
            /* height: -webkit-fill-available; */
            max-width: 2%;
            /* height: fit-content; */

        }
    </style>


    <main>
        <span>
            houdunren.comddddddddddddddddddddddd
            <br>
            asdasd
        </span>
    </main>

</body>
</html>